EP3962708A1 - Verfahren zum betreiben einer vorrichtung, computerprogrammprodukt und vorrichtung zum herstellen eines produktes - Google Patents
Verfahren zum betreiben einer vorrichtung, computerprogrammprodukt und vorrichtung zum herstellen eines produktesInfo
- Publication number
- EP3962708A1 EP3962708A1 EP20723079.8A EP20723079A EP3962708A1 EP 3962708 A1 EP3962708 A1 EP 3962708A1 EP 20723079 A EP20723079 A EP 20723079A EP 3962708 A1 EP3962708 A1 EP 3962708A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parameters
- machine
- quality
- parameter
- values
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000004590 computer program Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims description 38
- 230000007613 environmental effect Effects 0.000 claims description 33
- 238000000071 blow moulding Methods 0.000 claims description 19
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 8
- 238000010801 machine learning Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 239000007858 starting material Substances 0.000 claims description 3
- 230000002123 temporal effect Effects 0.000 claims description 3
- 238000013473 artificial intelligence Methods 0.000 claims description 2
- 238000013528 artificial neural network Methods 0.000 claims description 2
- 238000010101 extrusion blow moulding Methods 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 230000000875 corresponding effect Effects 0.000 abstract description 30
- 230000002596 correlated effect Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 52
- 239000003570 air Substances 0.000 description 6
- 239000008187 granular material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000001364 causal effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/766—Measuring, controlling or regulating the setting or resetting of moulding conditions, e.g. before starting a cycle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0265—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/04—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
- G05B13/042—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators in which a parameter or coefficient is automatically adjusted to optimise the performance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/786—Temperature
- B29C2049/7861—Temperature of the preform
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/786—Temperature
- B29C2049/7864—Temperature of the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C2049/787—Thickness
- B29C2049/78715—Thickness of the blown article thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/7604—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76177—Location of measurement
- B29C2945/76287—Moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76344—Phase or stage of measurement
- B29C2945/76381—Injection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76585—Dimensions, e.g. thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76769—Moulded articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76899—Removing or handling ejected articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76929—Controlling method
- B29C2945/76939—Using stored or historical data sets
- B29C2945/76949—Using stored or historical data sets using a learning system, i.e. the system accumulates experience from previous occurrences, e.g. adaptive control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/783—Measuring, controlling or regulating blowing pressure
Definitions
- the present invention relates to a method for operating an apparatus for manufacturing a product, in particular an apparatus for molding a hollow body or a
- Injection molded part a computer program product and a device for producing a product according to the preamble of the independent claims.
- the behavior of a device changes depending on the environment in which it is operated or what material is processed in the device. External parameters such as room temperature or outside temperature or air humidity have an influence on the device.
- Properties of the device itself can also change.
- a device can heat up during the production process, which has the consequence, for example, that certain parts of the device change in length or that operating resources, such as hydraulic oil or the like, have a viscosity that changes during operation. All of these changes have an impact on the product to be manufactured. It is therefore necessary to continuously check the properties of the products. In certain processes it is sufficient if, for example, every 100th product is tested, other processes make it necessary that every single product is tested. Such test processes are complex and expensive. In addition, not all products can be tested non-destructively.
- a method for blow molding containers is known from WO 2011/023155 A1, in which, based on measured parameters characterizing the blow molding process, at least one property of the fully blown container is calculated and compared with a target value. The parameter influencing the blow molding process is changed based on an established deviation.
- the simulations in question should be carried out using expert knowledge.
- the object of the invention is to remedy one or more disadvantages of the prior art.
- a method and a device are to be provided which make it possible to operate devices for the production of products essentially automatically and to produce products of as constant a quality as possible, and in particular to reduce the effort required to control the products produced.
- a method according to the invention for operating a device for manufacturing a product comprises the steps:
- the quality parameters of the product can be, for example, the material distribution in the finished product, the contour of the finished product, the wall thickness of the finished product, the weight of the finished product, the temperature distribution of the immediately demolded product or the color - and surface quality of the finished product.
- the product can also be an intermediate product. Accordingly, it may be in the quality parameters corresponding to a characteristic of the product, also a Para act meter of the intermediate product, such as the tempera ture of an art S toffschmelze or a diameter of a
- Tube preforms in extrusion blow molding are
- quality parameters are generally recorded by means of suitable sensors and made available as measured values, in particular automatically.
- quality parameters such as color or surface properties, which can be indicators of the surface quality, for example, are assessed by a machine operator and their size is communicated to the system as measured values through manual inputs.
- the machine parameters of the device can be, for example, the temperature of a tool, the tempera ture of a corresponding operating medium such as hydraulic oil or compressed air or cooling water and the like or, in the case of a blow molding machine, for example, the temperature of a mold, the volume of a Blowing gas flow or its temperature, to parameters of the stretching process such as Reckgeschwindig speed, to temperatures of a preform, to correspond to the melt pressure in a corresponding cavity, to speed of a screw conveyor, to volume, type or shape and temperature of starting material such as plastic granulate, which ge promotes, act.
- the static charge of the machine or the supplied plastic granulate for example, can also be recorded as machine parameters. It goes without saying that not all of the machine parameters mentioned here can be set directly. For example, the shape of the granulate can only be changed by replacing the granulate that has been fed in. It can thus be provided that in addition to adjustable machine parameters, non-adjustable machine parameters are also recorded.
- All of these machine parameters can in particular be measured or read out and made available as real values.
- An associated machine data record is in the present case a data record of the device with which the program product from which the quality parameter originates.
- a quality data record By capturing a quality data record, several measured values of a quality parameter of a product are included. Preferably, several measured values from several quality parameters are recorded simultaneously and made available in a quality data record.
- the machine data set is chronologically assigned to the quality data set, in other words, linked to it, and a data set is generated which contains both measured values and real values.
- that quality data record is preferably assigned to each machine data record which was relevant for the manufacture of the product or a preliminary product and thus the quality parameters associated therewith.
- a setpoint value of at least one machine parameter based on the determined correlation, based on a Setpoint of a quality parameter or several quality parameters makes it possible to precisely control a device for manufacturing a product.
- a control of the product after its manufacture can be superfluous, since the prior identification of the relationships between quality parameters and machine parameters, in other words, the determination of the correlation between the respective machine parameters and quality parameters, and the corresponding setting of the machine parameters the result, namely the target value to be achieved for the quality parameter, is predictable.
- a large number of setpoint values of machine parameters are preferably provided on the basis of a setpoint value of a quality parameter, such as a wall thickness of a blown body. All setpoint values of the machine parameters that can be influenced in terms of control and / or regulation technology are preferably provided.
- At least one environmental data set can be recorded.
- the environmental data set comprises measured values of one or, in particular, several environmental parameters or environmental parameters.
- This environmental data set is temporally assigned to the machine data set and thus forms part of the respective recorded data sets. With the acquisition of an environmental data set, it is also possible to determine the influence of the environmental conditions on the corresponding quality parameters and to include them in the correlation and thus in particular to expand the control model by one or more boundary conditions.
- the environmental parameters can include parameters such as air temperature or humidity, but also the air pressure, the time of day (especially day or night), the geographical position of the machine and / or the factory in which the machine is operated (and accordingly the associated climatic conditions) or parameters about the status of the factory hall in which the machine is located, for example open or closed gates or windows, which can say something about air movement, such as drafts.
- the ambient air temperature can have an influence on the cooling rate of the product, which in turn can possibly have an influence on a corresponding wall thickness of the product if, for example, the material solidifies more slowly at certain points.
- one or more machine parameters must be set differently. These relationships are recorded by determining the correlations between the measured values and real values and, in the case of an environmental parameter as a boundary condition, the measured values of the environmental parameters. These relationships are then made available in a control model.
- the data records can be determined at least once on the basis of test results from the device for manufacturing a product and can be made available to create the control model for the device.
- a large number of quality data sets and machine data sets can be created from these measured values and real values, and a large number of data sets can be generated from these.
- the determination of correlations is simplified and the corresponding correlations are more precise. This enables the creation of a more precise control model.
- the data records can therefore be determined by collecting a large number of measured values and real values from production systems and made available for creating the control model for the device.
- This learning phase creates a very close-knit link between the machine parameters, quality parameters and environmental parameters, which in turn leads to a very precise model of the relationships, which in turn leads to a very precise control model.
- the provision of the aforementioned setpoint or several setpoints for machine parameters can take place in the form of a transfer of these values to a control of a corresponding device for manufacturing a product, for example automatically or manually.
- the controller can be part of a computer and comprise one or more computer program products.
- the device for manufacturing a product can be operated in accordance with these specifications and carry out a corresponding production process or manufacturing process.
- This value or these values are compared with the setpoint or values of the quality parameter or parameters and a deviation is determined.
- the device is then controlled, in particular regulated, on the basis of this deviation with the aid of the control model, in particular taking into account the actual value of the at least one environmental parameter.
- the actual values of the machine parameters are compared with the respective setpoint.
- the device can be based on a deviation of the Actual value of the machine parameter controlled by the corresponding setpoint, in particular regulated.
- a respective value of a machine parameter such as the speed at which a mold is opened or closed
- Other machine parameters cannot be directly regulated. This applies, for example, to the viscosity of an operating medium.
- the temperature can be influenced, for example, which in turn has an effect on the viscosity. This effect in turn can be derived from one of the previously determined correlations.
- a deviation of the actual value from the corresponding target value of the respective machine parameter means that the corresponding target value of the quality parameter, on the basis of which the target value of the machine parameter was determined, also deviates.
- a control or regulation of the corresponding machine parameter or possibly one or more machine parameters that have a corresponding influence on these machine parameters and / or correlate with them thus makes it possible to achieve the corresponding setpoint value of the quality parameter.
- the respective actual value of the machine parameters and the at least one environmental parameter can be recorded continuously during operation of the device.
- the actual values of the respective machine parameters and of the at least one environmental parameter during operation of the device are recorded (cyclically) at predefinable time intervals.
- the correlations are transferred to the device only once. Due to the very close-knit linking of machine parameters, quality parameters and environmental parameters, a statement about the quality parameter can be made with fixed machine parameters or fixed machine parameters without having to re-measure them.
- the device can be set to the quality parameters to be achieved and the device selects the respective machine parameters in accordance with the control model. As soon as the measured machine parameters, that is to say the actual values, agree with the selected machine parameters, ie the setpoint values, it can be assumed that the actual value of the quality parameter corresponds to the selected setpoint value of the quality parameter.
- the present invention thus also relates to the operation of a device, in particular a method for operating a pre direction, for manufacturing a product, in particular a device for molding a hollow body or an injection molded part, the correlations obtained in a learning phase with the method described here being stored statically, in particular as a static control model, in this device.
- a device in particular a method for operating a pre direction, for manufacturing a product, in particular a device for molding a hollow body or an injection molded part
- the correlations obtained in a learning phase with the method described here being stored statically, in particular as a static control model, in this device.
- the corresponding target values of the machine parameters are selected and set.
- the target parameter is entered in an external database and the target parameters are fed into the device from the external database. This can for example be done manually by means of input by a machine operator. An automatic transfer, for example via an electronic interface, is also possible.
- an actual value of at least one of the quality parameters is compared cyclically with the target value of the quality parameter.
- comparisons are particularly advantageous when the device for manufacturing a product is operated in test mode, in other words during the learning phase. These comparisons can be used to determine whether the correlations that have been determined agree with practice and / or in order to obtain further measured values.
- the control model can preferably be determined in accordance with the correlation or correlations between the quality parameter or parameters and the machine parameters, taking into account the at least one quality parameter by means of machine learning.
- the correlation or the correlations can be determined by means of an implementation of artificial intelligence, in particular with a neural network. This allows the establishment and recognition of connections, i.e. correlations, regardless of whether there is a direct or causal connection between individual measured values and real values.
- machine learning far-reaching and / or superordinate patterns of a large number of individual measured values and real values can be recognized and / or compared with one another and / or linked with one another.
- the machine data record can include several machine parameters, in particular real values of several machine parameters.
- Each machine parameter can be assigned a weighting of its influence on each quality parameter according to its correlation with the one or more quality parameters of the quality data set.
- the control model therefore has a weighting of the individual machine parameters.
- this machine parameter has an influence, for example on a further quality parameter of the product, which can also be negative, for example, then it can be provided to assign a somewhat lower weighting to this machine parameter.
- the machine parameter with the greatest influence on a respective quality parameter is not necessarily the machine parameter with the highest weighting.
- the highest weighting can, for example, have a machine parameter which, although it has a correspondingly large influence on a certain quality parameter of the product, does at the same time has very little influence on other quality parameters and / or on other machine parameters.
- one or more of the respective machine parameters can be controlled or regulated with the respective weighting in relation to the quality parameter or parameters in accordance with the control model.
- a check is carried out to determine whether one or more of the actual values of the machine or environmental parameters recorded during the control of the device lie within a value range of the machine parameters recorded when the control model was created and / or the recorded environmental parameters.
- the ambient temperature was recorded as one of the environmental parameters to create the control model
- the lowest value indicates the lower limit of the value range, the highest value the upper limit.
- the value range in which the environmental parameter was recorded can thus extend, for example, from 15 ° to 30 °. For actual values outside this value range, there are no longer any values in the control model that are based on measured data.
- the error message can also be interpreted as an indication that a measuring sensor or measuring probe is defective.
- a check can be made to determine whether the deviation from the value range is significant. If the deviation is significant, an error signal can be output.
- a significant deviation can exist if either the deviating actual value relates to a machine parameter which is regulated with a high weighting on the setpoint of one or more quality parameters, or if the deviation has exceeded an, in particular adjustable, threshold value.
- control model switches off the device or at least requests manual control interventions if the test has shown that the deviation is significant or occurs repeatedly.
- the computer program product comprises commands which, when executed on a computer, cause the computer to carry out the steps of the method described here.
- Another aspect of the invention relates to an apparatus for manufacturing a product.
- This device is in particular a device for molding a hollow body.
- the device comprises a computer program product as described here.
- a device designed according to the invention makes it possible to determine all correlations between the device itself and the product to be manufactured, and subsequently makes it possible to dispense with extensive testing of the respective manufactured products in the later production process.
- the device according to the invention can be part of a device for injection molding or for blow molding.
- the device is an extruder, a dryer for starting material for the production of the product, an extrusion blower or a stretch blower.
- FIG. 1 a schematic representation of an apparatus for manufacturing a product
- FIG. 2 a sequence S chema of a method according to the invention
- FIG. 1 shows a simplified schematic representation of a device for manufacturing a product, which is embodied here as a blow molding machine 100, for example.
- the blow molding machine 100 has a feed 110, a Blasformbe rich 120 and a discharge 130.
- preforms are fed to the blow molding machine in a known manner.
- these are blown with compressed air and stretched with the aid of a stretching rod.
- the completely inflated containers are collected and / or removed in the discharge 130. This manufacturing process as such is known and is therefore not explained in more detail here.
- FIG. 1 also shows a controller 200.
- the controller 200 is connected to sensors which are arranged on the blow molding machine 100 via connections 102 indicated here by dashed lines.
- the controller 200 can be designed as a separate unit, but will generally be an integral part of the device.
- the sensors can be temperature sensors, clocks, position sensors and the like. Real values of machine parameters can be recorded with the sensors.
- the sensors are only indicated schematically here.
- a temperature sensor 101 is shown as a placeholder for a large number of sensors.
- connections 102 between the controller 200 and the blow molding machine are provided in the illustrated embodiment wired bound via cables. These connections can, however, also be implemented wirelessly or via optical waveguides.
- FIG. 2 shows a schematic sequence of a method for operating a device for manufacturing a product, for example a method for operating the blow molding machine 100 from FIG. 1.
- a quality data record 10 is recorded.
- the quality data record 10 includes, for example, several measured values of the wall thickness of a container.
- a machine data record 20 is recorded.
- the machine data record 20 includes real values of the temperature sensor 101 (see FIG. 1).
- the quality data record 10 and the machine data record 20 have been recorded simultaneously.
- the quality data set 10 can be assigned to the machine data set 20 in terms of time and a data set 30 can be formed. Within the data set 30, the measured values and the real values are correlated over time.
- the wall thickness Dl of a first container B1 in discharge 130 is measured.
- the wall thickness Dl corresponds to a quality parameter.
- the temperature Kl of the cavity in which a second container B2 is inflated at the same point in time t1 is measured in the blow molding area 120 (see FIG. 1).
- the temperature Kl corresponds to a machine parameter.
- the temperature VI of a preform of a third container B3 is measured in the feed 110 (see FIG. 1).
- This temperature VI can be treated as a machine parameter or as a quality parameter. In the present example, the temperature VI is treated as a machine parameter.
- all containers B1, B2 and B3 are moved on a station. That is, the preform of the third Container B3 is moved from the feed 110 into the blow molding area 120 and the inflated second container B2 is moved from the blow molding area 120 into the discharge area 130, while the first container B1 is removed from the discharge area 130. A new preform of a fourth container B4 is provided in the feed 110.
- the wall thickness D2 of the container B2 is now measured at time t2.
- the preform of the container B3 is located in the cavity for inflating the container B3, the temperature K2 being measured.
- the temperature V2 of the new preform of a container B4 is measured again.
- a second data record 30 ' is created. This includes the acquisition of a second machine data record 20 'and the acquisition of a second quality data record 10' and accordingly the generation of a data record 30 'as described above.
- the quality data records 10 and 10 'can comprise further quality parameters, which are preferably all recorded simultaneously.
- another quality parameter can be, for example, the opacity of a wall of the container or the concentricity of a closure with respect to a container base.
- the machine data records 20 and 20 'can also have measured values of further machine parameters.
- the data sets 30 and 30 ' are brought together and a correlation 40 is determined between the measured values and the real values.
- a setpoint 50 of the recorded machine parameters can be determined for each setpoint value of a quality parameter, or in the case of several machine parameters in the respective machine data sets 20, 20 ', setpoint values 50 for each detected machine parameter.
- the target values must be determined using two fixed values (target value of the quality parameter and the unchangeable value of the device / environment), which possible combinations.
- a setpoint value of the quality parameter is selected and corresponding setpoint values 50 of machine parameters are transferred to the controller 200 (see FIG. 1) in order to make the blow molding machine 100 (see FIG. 1) operate accordingly.
- the control model can be transferred to the control, or just the corresponding values of the machine parameters that were determined using the control model.
- the control can readjust them. If, for example, values should change that the controller cannot influence (for example outside temperature), the setpoint values 50 can be adjusted according to a specification for the corresponding value that cannot be influenced.
- the setpoint values 50 are anchored in a data matrix, in particular in a control model, which has been transferred to the controller 200 (see FIG. 1) as part of the setpoint value 50 of the quality parameter.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Artificial Intelligence (AREA)
- Automation & Control Theory (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Software Systems (AREA)
- Medical Informatics (AREA)
- Evolutionary Computation (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Health & Medical Sciences (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- General Factory Administration (AREA)
- Supply And Installment Of Electrical Components (AREA)
- Feedback Control In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH00567/19A CH716122A1 (de) | 2019-04-29 | 2019-04-29 | Verfahren zum Betreiben einer Vorrichtung zur Herstellung eines Produktes, Computerprogrammprodukt und Vorrichtung zum Herstellen eines Produktes. |
| PCT/EP2020/061797 WO2020221766A1 (de) | 2019-04-29 | 2020-04-28 | Verfahren zum betreiben einer vorrichtung, computerprogrammprodukt und vorrichtung zum herstellen eines produktes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3962708A1 true EP3962708A1 (de) | 2022-03-09 |
Family
ID=66439825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20723079.8A Pending EP3962708A1 (de) | 2019-04-29 | 2020-04-28 | Verfahren zum betreiben einer vorrichtung, computerprogrammprodukt und vorrichtung zum herstellen eines produktes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12275178B2 (de) |
| EP (1) | EP3962708A1 (de) |
| CN (1) | CN113795366B (de) |
| CH (1) | CH716122A1 (de) |
| WO (1) | WO2020221766A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7250072B2 (ja) * | 2021-07-21 | 2023-03-31 | 芝浦機械株式会社 | 射出成形機の良否判定システム |
| JP2024127205A (ja) * | 2023-03-09 | 2024-09-20 | セイコーエプソン株式会社 | 射出成形システム |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3927995A1 (de) * | 1989-03-01 | 1990-09-13 | Ver Foerderung Inst Kunststoff | Verfahren zum steuern der nachdruckphase beim spritzgiessen thermoplastischer kunststoffe |
| US5786999A (en) * | 1995-10-04 | 1998-07-28 | Barber-Colman Company | Combination control for injection molding |
| US5914884A (en) * | 1997-01-02 | 1999-06-22 | General Electric Company | Method for evaluating moldability characteristics of a plastic resin in an injection molding process |
| TW567132B (en) * | 2000-06-08 | 2003-12-21 | Mirle Automation Corp | Intelligent control method for injection molding machine |
| GB0015760D0 (en) * | 2000-06-27 | 2000-08-16 | Secretary Trade Ind Brit | Injection moulding system |
| JP4499601B2 (ja) * | 2005-04-01 | 2010-07-07 | 日精樹脂工業株式会社 | 射出成形機の制御装置 |
| JP4167282B2 (ja) | 2006-10-27 | 2008-10-15 | 日精樹脂工業株式会社 | 射出成形機の支援装置 |
| DE102009040803A1 (de) | 2009-08-25 | 2011-04-14 | Khs Corpoplast Gmbh & Co. Kg | Verfahren und Vorrichtung zur Blasformung von Behältern |
| US8855804B2 (en) * | 2010-11-16 | 2014-10-07 | Mks Instruments, Inc. | Controlling a discrete-type manufacturing process with a multivariate model |
| US10528024B2 (en) * | 2013-06-17 | 2020-01-07 | Ashley Stone | Self-learning production systems with good and/or bad part variables inspection feedback |
| CN105690694A (zh) * | 2016-01-19 | 2016-06-22 | 重庆世纪精信实业(集团)有限公司 | 一种基于数据记录的注塑机工艺参数设定系统及方法 |
| CN105751470B (zh) * | 2016-03-23 | 2017-12-12 | 广西科技大学 | 一种注塑机温度实时控制方法 |
| AT519491A1 (de) * | 2016-12-23 | 2018-07-15 | Engel Austria Gmbh | Verfahren zur Optimierung eines Prozessoptimierungssystems und Verfahren zum simulieren eines Formgebungsprozesses |
| JP6557272B2 (ja) * | 2017-03-29 | 2019-08-07 | ファナック株式会社 | 状態判定装置 |
| JP7021052B2 (ja) * | 2018-11-06 | 2022-02-16 | 株式会社東芝 | 製品状態推定装置 |
-
2019
- 2019-04-29 CH CH00567/19A patent/CH716122A1/de unknown
-
2020
- 2020-04-28 WO PCT/EP2020/061797 patent/WO2020221766A1/de not_active Ceased
- 2020-04-28 CN CN202080031860.5A patent/CN113795366B/zh active Active
- 2020-04-28 US US17/604,957 patent/US12275178B2/en active Active
- 2020-04-28 EP EP20723079.8A patent/EP3962708A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN113795366A (zh) | 2021-12-14 |
| CH716122A1 (de) | 2020-10-30 |
| US20220176604A1 (en) | 2022-06-09 |
| CN113795366B (zh) | 2025-02-11 |
| WO2020221766A1 (de) | 2020-11-05 |
| US12275178B2 (en) | 2025-04-15 |
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